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Transplant immunology

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https://www.readbyqxmd.com/read/29778558/successful-kidney-transplant-with-eculizumab-thymoglobulin-and-belatacept-therapy-in-a-highly-sensitised-patient-with-atypical-haemolytic-uraemic-syndrome-due-to-factor-h-mutation
#1
John Fredy Nieto-Ríos, Mónica Zuluaga-Quintero, Diana Carolina Bello-Márquez, Arbey Aristizabal-Alzate, Catalina Ocampo-Kohn, Lina María Serna-Higuita, Lina Arias, Gustavo Zuluaga-Valencia
Atypical haemolytic uremic syndrome is a disease caused by complement regulation abnormalities that generally progresses to chronic end-stage renal disease with a high rate of recurrence in kidney transplantation and a high risk of graft loss. Anti-complement therapy has improved the prognosis of these patients, achieving disease remission in most cases, increasing the likelihood of a successful kidney transplant and increasing patient and graft survival. Drugs with low risk of induction of thrombotic microangiopathies such as belatacept and mycophenolate have also been used with satisfactory results...
May 16, 2018: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/29773311/-corneal-endothelial-cell-therapy-a-review
#2
REVIEW
V Kocaba, O Damour, C Auxenfans, C Burillon
In France, endothelial dysfunction represents approximately one half of the indications for corneal transplants performed each year. However, the use of endothelial keratoplasty is limited by the technical difficulty of the procedure, a shortage of available grafts, and the potential for graft failure or rejection. These limitations are driving researchers to develop new, less invasive, and more effective therapies. Corneal endothelial cell therapy is being explored as a potential therapeutic measure, to avoid the uncertainty associated with grafting...
May 14, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29769782/graft-versus-host-disease-presenting-as-fibrosing-alopecia-in-a-pattern-distribution-a-model-for-pathophysiological-understanding-of-cicatricial-pattern-hair-loss
#3
Hudson Dutra Rezende, Maria Fernanda Reis Gavazzoni Dias, Ralph Michel Trüeb
A case of cutaneous graft versus host disease (GvHD) presenting as fibrosing alopecia in a pattern distribution (FAPD) is discussed, possibly providing a mechanistic model for a better understanding of the pathogenic events underlying cicatricial pattern hair loss. The implication of a follicular inflammation and fibrosis associated with patterned hair loss has emerged from several independent studies. Eventually, Zinkernagel and Trüeb reported a peculiar type of cicatricial pattern hair loss with histopathological features consistent with lichen planopilaris (LPP) associated with androgenetic alopecia (AGA)...
March 2018: International Journal of Trichology
https://www.readbyqxmd.com/read/29764228/anti-infective-chemoprophylaxis-after-solid-organ-transplantation
#4
Paul J Deziel, Raymund Razonable
Solid organ transplant recipients are at high risk of opportunistic infections due to bacterial, viral, fungal and parasitic pathogens. Anti-infective prophylaxis is a time-tested proven strategy for the prevention of these infections after solid organ transplantation. Areas covered: The current recommendations for the prevention of surgical site infections, herpes simplex, cytomegalovirus, invasive fungal infections, and selected parasitic diseases are highlighted. Recent peer-reviewed publications on the prevention of infection after solid organ transplantation were reviewed and their significance was discussed in the context of the current recommendations for preventing infectious complications...
May 15, 2018: Expert Review of Clinical Immunology
https://www.readbyqxmd.com/read/29762828/neoplasms-and-renal-transplantation-impact-of-gender-comorbidity-and-age-on-in-hospital-mortality-a-retrospective-study-in-the-region-emilia-romagna-of-italy
#5
F Fabbian, A De Giorgi, R Tiseo, R Cappadona, B Zucchi, M Rubbini, F Signani, A Storari, R De Giorgio, G La Manna, R Manfredini
OBJECTIVE: The aim of this retrospective study was to investigate the relationship between cancer, non-immunologic comorbidity, estimated by International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) codification, gender and in-hospital mortality (IHM) in a large sample of renal transplant recipients (RTRs) living in the region Emilia-Romagna (RER) of Italy. PATIENTS AND METHODS: We evaluated IHM in RTRs admitted between 2000 and 2013 recorded in the RER database...
April 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29762460/a-new-life-motherhood-after-heart-transplantation-a-single-center-experience-and-review-of-literature
#6
Francesca Macera, Lucia Occhi, Gabriella Masciocco, Marisa Varrenti, Maria Frigerio
BACKGROUND: Pregnancy after heart transplantation (HTx) may expose the recipient to hemodynamic and immunologic risks, and the newborn to toxic effects of immunosuppressive therapy. Adequate preconception counseling is crucial to identify optimal timing and to modify immunosuppressive therapy in order to minimize risks for both the mother and the fetus. METHOD: We describe our experience with 12 pregnancies occurred in 11 women who had undergone HTx at our center...
May 14, 2018: Transplantation
https://www.readbyqxmd.com/read/29758415/anti-tumor-effects-of-propranolol-adjuvant-activity-on-a-transplanted-murine-breast-cancer-model
#7
Somayeh Ashrafi, Reza Shapouri, Ahmad Shirkhani, Mehdi Mahdavi
Propranolol (Pro), a non-specific β-adrenergic blocking drug, competitively prevents the binding of catecholamines to receptors and suppresses cancer cells. The anti-tumor activity of propranolol has been proved in different kinds of cancers. In this study, we assessed the adjuvant activity of propranolol combined with a tumor vaccine model on the immunological parameters of breast tumor-bearing mice. Breast tumor pieces were implanted into the flank of inbred BALB/C female mice from stock mice. Tumor-bearing mice were treated with tumor antigen lysate vaccine and propranolol/Vaccine (Pro/Vac) combination (as treatment groups), propranolol and PBS (as control groups) for 5 consecutive days, every 12 h...
May 11, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29757903/contemporary-strategies-and-barriers-to-transplantation-tolerance
#8
Brian Ezekian, Paul M Schroder, Kyle Freischlag, Janghoon Yoon, Jean Kwun, Stuart J Knechtle
The purpose of this review is to discuss immunologic tolerance as it applies to solid organ transplantation and to identify barriers that hinder the achievement of this long-term goal. First, the definition of tolerance and an introduction of mechanisms by which tolerance exists or can be achieved will be discussed. Next, a review of contemporary attempts at achieving transplant tolerance will be described. Finally, a discussion of the humoral barriers to transplantation tolerance and potential ways to overcome these barriers will be presented...
May 2, 2018: Transplantation
https://www.readbyqxmd.com/read/29752413/everolimus-with-reduced-calcineurin-inhibitor-exposure-in-renal-transplantation
#9
Julio Pascual, Stefan P Berger, Oliver Witzke, Helio Tedesco, Shamkant Mulgaonkar, Yasir Qazi, Steven Chadban, Federico Oppenheimer, Claudia Sommerer, Rainer Oberbauer, Yoshihiko Watarai, Christophe Legendre, Franco Citterio, Mitchell Henry, Titte R Srinivas, Wen-Lin Luo, AnaMaria Marti, Peter Bernhardt, Flavio Vincenti
Background Everolimus permits reduced calcineurin inhibitor (CNI) exposure, but the efficacy and safety outcomes of this treatment after kidney transplant require confirmation. Methods In a multicenter noninferiority trial, we randomized 2037 de novo kidney transplant recipients to receive, in combination with induction therapy and corticosteroids, everolimus with reduced-exposure CNI (everolimus arm) or mycophenolic acid (MPA) with standard-exposure CNI (MPA arm). The primary end point was treated biopsy-proven acute rejection or eGFR<50 ml/min per 1...
May 11, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29750876/evaluation-of-molecular-changes-of-distal-organs-after-small-bowel-transplantation-experimental-study
#10
P Urban, M Rabajdová, Š Feterik, G Bódy, T Granda, M Mareková, J Veselá
The ischemia and reperfusion of a jejunal graft during transplantation triggers the stress of endoplasmic reticulum; thus inducing the synthesis of pro-inflammatory cytokines. Spreading of these signals stimulate immunological reactions in distal tissues i.e. lung, liver and spleen. The aim of this study was to detect the molecular changes in liver and spleen induced by transplanted jejunal graft with one or six hours of reperfusion (group Tx1 and Tx6). Analysis of gene expression changes of inflammatory mediators (TNFalpha, IL-10) and specific chaperones (Gadd153, Grp78) derived from endoplasmic reticulum (ER) was done and compared to control group...
May 10, 2018: Physiological Research
https://www.readbyqxmd.com/read/29750725/face-transplant-status-of-current-supporting-technology-to-plan-and-perform-the-operation-and-monitor-the-graft-in-the-postoperative-period
#11
Edward J Caterson, Justin C McCarty
Face transplant has rapidly advanced since the first operation in 2005, and to date, 40 partial or full-face transplants have been performed. The safety and efficacy of this operation are aided at all phases by supporting technologies. These include advanced imaging techniques to plan the operation, devices to monitor the flap in the immediate perioperative period, and noninvasive imaging and serum markers to monitor for acute and chronic rejection. Some of the technologies, such as those used in the immediate perioperative period, have extensive evidence supporting their use, whereas those to detect acute or chronic rejection remain investigational...
May 10, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29750317/mycophenolate-mofetil-for-sustained-remission-in-nephrotic-syndrome
#12
Uwe Querfeld, Lutz T Weber
The clinical application of mycophenolate mofetil (MMF) has significantly widened beyond the prophylaxis of acute and chronic rejections in solid organ transplantation. MMF has been recognized as an excellent treatment option in many immunologic glomerulopathies. For children with frequently relapsing nephrotic syndrome (FRNS) or steroid-dependent nephrotic syndrome (SDNS) experiencing steroid toxicity, MMF has been recommended as a steroid-sparing drug. Uncontrolled studies in patients with FRNS and SDSN have shown that many patients can achieve sustained remission of proteinuria with MMF monotherapy...
May 11, 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29749672/transgenic-mice-that-accept-luciferase-or-gfp-expressing-syngeneic-tumor-cells-at-high-efficiencies
#13
Naoki Aoyama, Hiroyuki Miyoshi, Hitoshi Miyachi, Masahiro Sonoshita, Masaru Okabe, Makoto Mark Taketo
Jellyfish green fluorescent protein (GFP) and firefly luciferase can serve as versatile tracking markers for identification and quantification of transplanted cancer cells in vivo. However, immune reactions against these markers can hamper the formation of syngraft tumors and metastasis that follows. Here, we report two transgenic (Tg) mouse lines that express nonfunctional mutant marker proteins, namely modified firefly luciferase (Luc2) or enhanced GFP (EGFP). These mice, named as Tg-mLuc2 and Tg-mEGFP, turned out to be immunologically tolerant to the respective tracking markers and thus efficiently accepted syngeneic cancer cells expressing the active forms of the markers...
May 11, 2018: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
https://www.readbyqxmd.com/read/29744913/cartilage-hair-hypoplasia-with-cutaneous-lymphomatoid-granulomatosis
#14
D Sathishkumar, J E Gach, M Ogboli, M Desai, T Cole, W Högler, J Motwani, A Norton, B Morland, I Colmenero
Cartilage-hair hypoplasia (CHH) is an autosomal recessive chondrodysplasia characterized by short-stature, sparse hair and impaired cellular immunity. We describe a young girl who was diagnosed with CHH based on the findings of recurrent infections, short stature with metaphyseal chondrodysplasia, and a confirmed bi-allelic RMRP gene mutation. At 13 years, the patient developed an Epstein-Barr virus (EBV)-driven lymphoproliferative disorder involving the lung, which responded partially to chemotherapy. Simultaneously, she developed multiple indurated plaques involving her face, which had histological findings of granulomatous inflammation and EBV-associated low-grade lymphomatoid granulomatosis...
May 10, 2018: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/29744770/global-report-on-primary-immunodeficiencies-2018-update-from-the-jeffrey-modell-centers-network-on-disease-classification-regional-trends-treatment-modalities-and-physician-reported-outcomes
#15
Vicki Modell, Jordan S Orange, Jessica Quinn, Fred Modell
Primary immunodeficiencies (PI) are genetic defects of the immune system that result in chronic, serious, and often life-threatening infections, if not diagnosed and treated. Many patients with PI are undiagnosed, underdiagnosed, or misdiagnosed. In fact, recent studies have shown that PI may be more common than previously estimated and that as many as 1% of the population may be affected with a PI when all types and varieties are considered. In order to raise awareness of PI with the overall goal of reducing associated morbidity and mortality, the Jeffrey Modell Foundation (JMF) established a network of specialized centers that could better identify, diagnose, treat, and follow patients with PI disorders...
May 9, 2018: Immunologic Research
https://www.readbyqxmd.com/read/29735033/pancreas-transplantation-for-patients-with-type-1-and-type-2-diabetes-mellitus-in-the-united-states-a-registry-report
#16
REVIEW
Angelika C Gruessner, Rainer W G Gruessner
Successful pancreas transplantation is still the only method to restore short-term and long-term insulin independence and good metabolic control for patients with diabetes. Since the first transplant in 1966, tremendous progress in outcome was made; however, transplant numbers have declined since 2004. This article describes the development and risk factors of pancreas transplantation with or without a kidney graft between 2001 and 2016. Patient survival and graft function improved significantly owing to careful recipient and donor selection, which reduced technical failure and immunologic graft loss rates...
June 2018: Gastroenterology Clinics of North America
https://www.readbyqxmd.com/read/29735030/living-donor-intestinal-transplantation
#17
REVIEW
Ivo G Tzvetanov, Kiara A Tulla, Giuseppe D'Amico, Enrico Benedetti
Living donor intestinal transplantation (LDIT) has been improved leading to results comparable to those obtained with deceased donors. LDIT should be limited to specific indications and patient selection. The best indication is combined living donor intestinal/liver transplantation in pediatric recipients with intestinal and hepatic failure; the virtual elimination of waiting time may avoid the high mortality experienced by candidates on the deceased waiting list. Potentially, LDIT could be used in highly sensitized recipients to allow the application of de-sensitization protocols...
June 2018: Gastroenterology Clinics of North America
https://www.readbyqxmd.com/read/29735024/immunologic-monitoring-to-personalize-immunosuppression-after-liver-transplant
#18
REVIEW
Andrew Zhu, Alexandra Leto, Abraham Shaked, Brendan Keating
Although immunosuppressive drugs have enhanced patient outcomes in transplantation, the liver transplant community has made significant research efforts into the discovery of more accurate and precise methods of posttransplant monitoring and diagnosing. Current research in biomarkers reveals many promising approaches.
June 2018: Gastroenterology Clinics of North America
https://www.readbyqxmd.com/read/29734149/recent-advances-in-treatment-strategies-for-lupus-nephritis
#19
Kazunori Karasawa, Keiko Uchida, Tomo Takabe, Takahito Moriyama, Kosaku Nitta
Systemic lupus erythematosus (SLE) is an autoimmune chronic inflammatory disease that affects multiple organs and tissues. Lupus nephritis (LN) is a serious complication of SLE, which occurs at a high rate. Conventional treatment strategies of LN have been widely accepted by two concepts such as induction therapy and maintenance therapy. In LN induction therapy until recently, cyclophosphamide in combination with prednisone (PSL) has been the standard method of treatment for proliferative forms of LN. In the latest review, the combination of mycophenolate mofetil (MMF) is also considered a standard treatment option...
2018: Contributions to Nephrology
https://www.readbyqxmd.com/read/29732615/update-on-cellular-encapsulation
#20
REVIEW
Kate E Smith, Robert C Johnson, Klearchos K Papas
There is currently a significant disparity between the number of patients who need lifesaving transplants and the number of donated human organs. Xenotransplantation is a way to address this disparity and attempts to enable the use of xenogeneic tissues have persisted for centuries. While immunologic incompatibilities have presented a persistent impediment to their use, encapsulation may represent a way forward for the use of cell-based xenogeneic therapeutics without the need for immunosuppression. In conjunction with modern innovations such as the use of bioprinting, incorporation of immune modulating molecules into capsule membranes, and genetic engineering, the application of xenogeneic cells to treat disorders ranging from pain to liver failure is becoming increasingly realistic...
May 6, 2018: Xenotransplantation
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